insides vs innards

insides and innards both are nouns.

Word	Noun	Adjective	Verb	Adverb
insides	Yes	No	No	No
innards	Yes	No	No	No

As nouns, insides and innards are synonyms defined as:

insides and innards: internal organs collectively (especially those in the abdominal cavity)

Other synonyms of insides include entrails, viscera.

insides (noun)	innards (noun)
internal organs collectively (especially those in the abdominal cavity)	internal organs collectively (especially those in the abdominal cavity)